NumberResearchRecent prefix assignments
0 prefixes assigned in the last 30 days · from the daily NANPA CO code file, 09/19/2026
The Code holder is who opened each NPA-NXX prefix — not necessarily who holds the numbers. A prefix is 10,000 numbers, but under pooling its ten 1,000-number blocks are handed out individually, often to different carriers; the code holder may hold only one block, or none. The Thousands-blocks column shows how the ten blocks are really split — click which blocks → to see who holds each 1,000-number block and its last-4-digit range. Assignments are initial assignments; the current serving carrier may differ due to portability.
Most active assignees, all time — NPA 403
New assignments by month
Sep 2026
Aug 2026
Jul 2026
Jun 2026
May 2026
Apr 2026
Mar 2026
Feb 2026
Jan 2026
Dec 2025
Nov 2025
Oct 2025
| Assigned | NPA-NXX | Thousands-blocks taken (last-4 opening) | Code holder | OCN | Rate center | State |
|---|---|---|---|---|---|---|
| 2007-12-03 | 403-864 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Sylvan Lake | — |
| 2007-12-03 | 403-865 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Innisfail | — |
| 2007-12-01 | 403-789 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Lacombe | — |
| 2007-12-01 | 403-790 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Ponoka | — |
| 2007-12-01 | 403-960 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Airdrie | — |
| 2007-12-01 | 403-961 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Canmore | — |
| 2007-12-01 | 403-962 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Strathmore | — |
| 2007-12-01 | 403-986 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Red Deer | — |
| 2007-11-27 | 403-985 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Banff | — |
| 2007-09-19 | 403-452 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2007-08-17 | 403-971 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| 2007-08-16 | 403-409 | not yet reported which blocks → | Bell Mobility | 6574 | Brooks | — |
| 2007-08-10 | 403-796 | not yet reported which blocks → | Bell Mobility | 6574 | Calgary | — |
| 2007-08-09 | 403-694 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Lethbridge | — |
| 2007-08-09 | 403-712 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Medicine Hat | — |
| 2007-08-09 | 403-713 | not yet reported which blocks → | ISP Telecom Inc. | 4727 | Red Deer | — |
| 2007-08-02 | 403-648 | not yet reported which blocks → | Zayo Canada Inc. | 8304 | Calgary | — |
| 2007-07-30 | 403-524 | not yet reported which blocks → | Bell West Inc. | 2933 | Lethbridge | — |
| 2007-07-12 | 403-671 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| 2007-07-03 | 403-895 | not yet reported which blocks → | TELUS Mobility | 8301 | Rocky Mountain House | — |
| 2007-06-21 | 403-623 | not yet reported which blocks → | TELUS Mobility | 8301 | Crowsnest Pass | — |
| 2007-06-21 | 403-624 | not yet reported which blocks → | TELUS Mobility | 8301 | Pincher Creek | — |
| 2007-06-18 | 403-489 | not yet reported which blocks → | TELUS Mobility | 8301 | Claresholm | — |
| 2007-06-18 | 403-490 | not yet reported which blocks → | TELUS Mobility | 8301 | Claresholm | — |
| 2007-06-18 | 403-491 | not yet reported which blocks → | TELUS Mobility | 8301 | Milk River | — |
| 2007-06-18 | 403-492 | not yet reported which blocks → | TELUS Mobility | 8301 | Milk River | — |
| 2007-06-18 | 403-622 | not yet reported which blocks → | TELUS Mobility | 8301 | Vauxhall | — |
| 2007-06-14 | 403-754 | not yet reported which blocks → | Bell West Inc. | 2933 | Red Deer | — |
| 2007-06-12 | 403-459 | not yet reported which blocks → | Bell Mobility | 6574 | Crowsnest Pass | — |
| 2007-06-12 | 403-482 | not yet reported which blocks → | Bell Mobility | 6574 | Milk River | — |
| 2007-06-12 | 403-484 | not yet reported which blocks → | Bell Mobility | 6574 | Pincher Creek | — |
| 2007-06-12 | 403-551 | not yet reported which blocks → | Bell Mobility | 6574 | Vauxhall | — |
| 2007-06-12 | 403-629 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| 2007-06-12 | 403-706 | not yet reported which blocks → | Bell Mobility | 6574 | Claresholm | — |
| 2007-05-25 | 403-853 | not yet reported which blocks → | TELUS Mobility | 8301 | Veteran | — |
| 2007-05-24 | 403-963 | not yet reported which blocks → | TELUS Mobility | 8301 | Ponoka | — |
| 2007-05-11 | 403-200 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2007-05-11 | 403-305 | not yet reported which blocks → | TELUS Mobility | 8301 | Calgary | — |
| 2007-05-07 | 403-455 | not yet reported which blocks → | Shaw Telecom Inc. | 497E | Calgary | — |
| 2007-05-03 | 403-349 | not yet reported which blocks → | TELUS | 8084 | Red Deer | — |
| 2007-05-03 | 403-353 | not yet reported which blocks → | TELUS | 8084 | Lethbridge | — |
| 2007-03-20 | 403-604 | not yet reported which blocks → | Rogers Communications Canada Inc. (Wireless) | 8821 | Calgary | — |
| 2007-03-15 | 403-401 | not yet reported which blocks → | Fido Solutions Inc. | 5643 | Calgary | — |
| 2007-03-14 | 403-412 | not yet reported which blocks → | Bell Mobility | 6574 | Three Hills | — |
| 2007-03-14 | 403-413 | not yet reported which blocks → | Bell Mobility | 6574 | Coronation | — |
| 2007-03-14 | 403-414 | not yet reported which blocks → | Bell Mobility | 6574 | Oyen | — |
| 2007-03-14 | 403-415 | not yet reported which blocks → | Bell Mobility | 6574 | Olds | — |
| 2007-03-14 | 403-417 | not yet reported which blocks → | Bell Mobility | 6574 | Veteran | — |
| 2007-03-14 | 403-418 | not yet reported which blocks → | Bell Mobility | 6574 | Rocky Mountain House | — |
| 2007-03-14 | 403-419 | not yet reported which blocks → | Bell Mobility | 6574 | Sundre | — |
Source: NANPA CO Code Assignments (Utilized, All States, Public), file date 09/19/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.